Process for the manufacture of half linen



Patented Aug. 13, 1929.

PATENT OFFICE.

. NORBER'I' VOHS, OF MUNICH-GLADBACH, GERMANY.

PROCESS FOR THE MANUFACTURE OF HAiIF LINEN.

No Drawing. Application filed August 31, 1927, Serial No. 216,789, and in Germany June 14, 1927.

For the manufacture of so-called half linen, that is to say, of a fabric consisting of linen and cotton threads woven together, ordinarily, either the warp is made of cotton and the weft of linen, or else the warp is made of linen and the Weft of cotton. Linen blend yarns are also frequently employed either for the warp or for the weft, or for both. 1

I have now discovered that it is possible to employ the more expensive material, which predominantly determines the character of the fabric, in a smaller proportion than hitherto, and at the same time to obtain the same appearance, or frequently an even more characteristic texture, by picking the more expensive material as a weft thread in a mixed doubled form. By a doubled yarn I mean one in which the individual threads run off in an untwis'ted condition from a weft bobbin.

For manufacture of half linen, acording to the invention a warp of cotton is employed and a weft thread is picked, which is doubled from a linen thread and a cotton thread. As compared with the known method of weav ing, wherein for example the Warp consists of cotton and the weft of linen, and wherein therefore these two materials are used in ap proximately equal proportions, the cotton and the linen in the process according to the pres ent invention are in the proportion of about 3 to 1. Notwithstanding this ratio, however,

the fabric exhibits predominantly a linenlike character. This characteristic appearance is to be attributed to the fact that in the doubled weft thread the individual threads, during the picking, constantly bear irregularly against one another, and that owing to this the more valuable thread comes more positively into evidence than would'be anticipated, and imparts to the fabric a linen-like 40 character.

Tests have shown that this efl'ect cannot be obtained if the threads employed for the doubled yarn are individually picked alternately," for which moreover a longer time would be required.

What I claim is:-

1. A mixed linen fabric consisting of warp threads substantially all of which are of cotton and doubled weft threads of linen and 60 cotton, the individual weft threads of which are not twisted together but run .parallel to one another.

2. A mixed linen fabric consisting of warp threads exclusively of cotton and doubled weft threads of linen and cotton, the individual weft threads of which are not twisted together but run parallel to one an- (other.

In testimony whereof I have signed my name to this specification.

NORBERT VOHS. 

